Barlow 1987, p. 256. Barlow, Jeffrey G. (1987), "The Zhuang Minority Peoples of the Sino-Vietnamese Frontier in the Song Period", Journal of Southeast Asian Studies, 18 (2): 250–269, JSTOR20070970
Barlow 1987, p. 261. Barlow, Jeffrey G. (1987), "The Zhuang Minority Peoples of the Sino-Vietnamese Frontier in the Song Period", Journal of Southeast Asian Studies, 18 (2): 250–269, JSTOR20070970